<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %><%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2018/4/2
  Time: 20:56
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

<table>
    <tr>
        <td>编码</td>
        <td>姓名</td>
        <td>密码</td>
    </tr>
    <%
        class User{
            int id;
            String name;
            String password;
        }
        List<User> userList =new ArrayList<>();

      //  User chen = new User();
        // chen.id=1;
        //chen.name ="chengongsuo";
        //chen.password="123";

        //userList.add(chen);

        //3+1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        //加载驱动程序
        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018",
                "root",
                "sctu123456"
        );
        statement = connection.createStatement();
        resultSet = statement.executeQuery(sql);

        while (resultSet.next()){
            int id =resultSet.getInt(1);
            String name = resultSet.getString(2);
            String password = resultSet.getString(3);

            User user =new User();
            user.id = id;
            user.name =name;
            user.password= password;

            userList.add(user);
        }
        resultSet.close();
        statement.close();
        connection.close();

        for (User user : userList){
            //221
            //2"
            //2 +
            //1 变量
            out.write("<tr><td>"+user.id+"</td><td>"+user.name+"</td><td>"+user.password+"</td></tr>");
        }
    %>
    <tr><td>1</td><td>John</td><td>1231123</td></tr>
</table>
</body>
</html>
